Accelerometer & related products FAQ
The following information assumes direct connection of a piezoelectric acceleration sensor to a sensor amplifier, FFT analyzer, or other such device with a dedicated cable.
Signal is not output
1. Check that connectors are not loose. |
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2. Check that cables are not disconnected. |
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3. Check that CCLD drive is on. |
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4. Check that the NP-0021 miniature/BNC conversion adapter is used or not. |
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Excessive noise
1. Check that cables are not under excessive force. |
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2. Check that cables are steady. |
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3. Check that sensors are not placed in a drafty location or in an environment subject to sudden, severe temperature changes, such as proximity to an incandescent light bulb |
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4. Check that no ground loops exist |
Creation of ground loops readily produces so-called common mode noise. Optimal corrective measures differ depending on the grounding status of the equipment on site. Try the following measures, and use the method that works best. |
5. Noise current is flowing to the measurement target |
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6. The system is affected by motor flux leakage |
Try some of the following corrective measures. |
7. Check that the accelerometer is not exposed to powerful magnetic noise |
Try some of the following corrective measures. |
Signal amplitudes or acceleration spectra are unusual.
1. Acceleration values are unusual |
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2. Check that the mass of the accelerometer is sufficiently small, relative to the work piece |
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3. Check that the accelerometer is installed correctly |
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4. Check that the vibrating axis and the installation surface of the acceleration sensor are perpendicular. |
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5. Check that the input range is not exceeded |
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Revised:2010/06/14